A095784 Values of n for which A095777(n) is 15 (those terms which are expressible in decimal digits for bases 2 through 16, but not for base 17).

16, 33, 48, 84, 99, 256, 260, 261, 288, 512, 513, 592, 784, 785, 786, 787, 788, 789, 800, 801, 900, 915, 916, 917, 1040, 1041, 1380, 1381, 1395, 1400, 4400, 4401, 4416, 4609, 4610, 4611, 4624, 4628, 4629

Offset

1,1

Links

Table of n, a(n) for n=1..39.

Example

a(5)=99 because 99 when expressed in successive bases starting at 2 will produce its first non-decimal digit at base 17. Like so: 1100011, 10200, 1203, 344, 243, 201, 143, 120, 99, 90, 83, 78, 71, 69, 63. In base 17, 99 is 5E.

Maple

S := []; for n from 1 to 5000 do; if 1>0 then; ct := 0; ok := true; b := 2; if (n>9) then; while ok=true do; L := convert(n, base, b); for e in L while ok=true do; if (e > 9) then ok:=false; fi; od; if ok=true then; ct := ct + 1; b := b + 1; fi; od; fi; if ct=15 then S := [op(S), n]; fi; fi; od; S;

Crossrefs

Cf. A095777.

Sequence in context: A151981 A110472 A110502 * A041502 A041500 A361692

Adjacent sequences: A095781 A095782 A095783 * A095785 A095786 A095787

Keyword

base,nonn

Author

Chuck Seggelin (seqfan(AT)plastereddragon.com), Jun 05 2004

Status

approved